@Override
  public STATUS showFullscreen(int step, String tag) {
    oad.getActivity()
        .runOnUiThread(
            new Runnable() {

              @Override
              public void run() {
                if (InterstitialAd.isAvailable()) {
                  InterstitialAd.display(oad.getActivity());

                  InterstitialAd.setOnStatusListener(listener);
                }
              }
            });
    return OpenAdAdapter.STATUS.CALLBACK;
  }
 @Override
 public void init(OpenAdAdapter oad, JSONObject o1) {
   this.oad = oad;
   id = o1.optString("id");
   HeyzapAds.start(id, oad.getActivity());
 }